Acura RL. Instruction — page 2

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

A malfunction is detected if these three conditions are not present after the engine and the ignition switch
have been off for at least 6 hours:

The temperature (IAT minus ECT1) is not 32°F (32°C) or less.

The temperature (IAT minus ECT2) is not 16°F (16°C) or less.

The temperature (ECT2 minus ECT1) is not 25°F (25°C) or less.

Driving Pattern

1. Turn the ignition off, and wait at least 6 hours.

2. Start the engine, and let it idle for at least 10 seconds.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected during the first drive cycle, a Temporary DTC is stored in the PCM
memory. If the malfunction recurs during the next (second) drive cycle, the MIL comes on and the DTC and
the freeze frame data are stored.

Conditions for clearing the MIL

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the
diagnostic runs.

The MIL, the DTC, the Temporary DTC, and the freeze frame data can be cleared by using the scan tool
Clear command or by disconnecting the battery.

DTC P0112 (10): ADVANCED DIAGNOSTICS

DTC P0112: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT LOW VOLTAGE

Execution

Once per driving cycle

Sequence

None

Duration

10 seconds or more

DTC Type

Two drive cycles, MIL ON

OBD Status

N/A

Condition

Minimum

Maximum

Engine off time 6 hours

No active DTCs P0112, P0113, P0116, P0117, P0118, P0125, P1116, P2183, P2184, P2185, P2610

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:02 PM

Page 5

© 2005 Mitchell Repair Information Company, LLC.

Fig. 6: Intake Air Temperature (IAT) Sensor (Low Voltage) — Circuit Diagram

Fig. 7: Intake Air Temperature (IAT) Sensor Output Voltage Graph

General Description

The intake air temperature (IAT) sensor is a thermistor that detects intake air temperature, and it is used for
A/F feedback control to compensate for the atmospheric density fluctuations that accompany changes in
intake air temperature.

The IAT sensor resistance varies depending on temperature. The output voltage and the sensor resistance
increase as the intake air temperature decreases. Conversely, the output voltage and the sensor resistance
decrease as the intake air temperature increases. If the IAT sensor output voltage is excessively low, the
powertrain control module (PCM) detects a malfunction and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART

Execution

Continuous

Sequence

None

Duration

2 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:02 PM

Page 6

© 2005 Mitchell Repair Information Company, LLC.

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The IAT sensor output voltage is 0.08 V or less for at least 2 seconds.

Diagnosis Details

Conditions for illuminating the MIL

When a malfunction is detected, the MIL comes on and the DTC and the freeze frame data are stored in the
PCM memory.

Conditions for clearing the MIL

The MIL will be cleared if the malfunction does not recur during three consecutive trips in which the
diagnostic runs.

The MIL, the DTC, and the freeze frame data can be cleared by using the scan tool Clear command or by
disconnecting the battery.

DTC P0113 (10): ADVANCED DIAGNOSTICS

DTC P0113: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT HIGH VOLTAGE

Fig. 8: Intake Air Temperature (IAT) Sensor (High Voltage) — Circuit Diagram

Condition

Ignition switch

ON

No active DTCs

P0113

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:02 PM

Page 7

© 2005 Mitchell Repair Information Company, LLC.

Fig. 9: Intake Air Temperature (IAT) Sensor Output Voltage Graph

General Description

The intake air temperature (IAT) sensor is a thermistor that detects intake air temperature, and it is used for
A/F feedback control to compensate for the atmospheric density fluctuations that accompany changes in
intake air temperature.

The IAT sensor resistance varies depending on temperature. The output voltage and the sensor resistance
increase as the intake air temperature decreases. Conversely, the output voltage and the sensor resistance
decrease as the intake air temperature increases. If the IAT sensor output voltage is excessively high, the
powertrain control module (PCM) detects a malfunction and a DTC is stored.

Monitor Execution, Sequence, Duration, DTC Type, OBD Status

MONITOR DESCRIPTION CHART

Enable Conditions

ENABLE CONDITIONS

Malfunction Threshold

The IAT sensor output voltage is 4.92 V or more for at least 2 seconds.

Diagnosis Details

Execution

Continuous

Sequence

None

Duration

2 seconds or more

DTC Type

One drive cycle, MIL ON

OBD Status

N/A

Condition

Ignition switch

ON

No active DTCs

P0112

2007 Acura RL

2007 ENGINE PERFORMANCE Advanced Diagnostics — RL

me

Friday, June 05, 2009 2:32:02 PM

Page 8

© 2005 Mitchell Repair Information Company, LLC.

Оцените статью
Инструкции по ремонту
Добавить комментарий